1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * Device Tree file for Excito Bubba B3
4 *
5 * Copyright (C) 2013, Andrew Lunn <andrew@lunn.ch>
6 *
7 *
8 * Note: This requires a new'ish version of u-boot, which disables the
9 * L2 cache. If your B3 silently fails to boot, u-boot is probably too
10 * old. Either upgrade, or consider the following email:
11 *
12 * https://lists.debian.org/debian-arm/2012/08/msg00128.html
13 */
14
15 /dts-v1/;
16
17 #include "kirkwood.dtsi"
18 #include "kirkwood-6281.dtsi"
19
20 / {
21 model = "Excito B3";
22 compatible = "excito,b3", "marvell,kirkwood-88f6281", "marvell,kirkwood";
23 memory { /* 512 MB */
24 device_type = "memory";
25 reg = <0x00000000 0x20000000>;
26 };
27
28 chosen {
29 bootargs = "console=ttyS0,115200n8 earlyprintk";
30 stdout-path = &uart0;
31 };
32
33 ocp@f1000000 {
34 pinctrl: pin-controller@10000 {
35 pmx_button_power: pmx-button-power {
36 marvell,pins = "mpp39";
37 marvell,function = "gpio";
38 };
39 pmx_led_green: pmx-led-green {
40 marvell,pins = "mpp38";
41 marvell,function = "gpio";
42 };
43 pmx_led_red: pmx-led-red {
44 marvell,pins = "mpp41";
45 marvell,function = "gpio";
46 };
47 pmx_led_blue: pmx-led-blue {
48 marvell,pins = "mpp42";
49 marvell,function = "gpio";
50 };
51 pmx_beeper: pmx-beeper {
52 marvell,pins = "mpp40";
53 marvell,function = "gpio";
54 };
55 };
56
57 spi@10600 {
58 status = "okay";
59
60 m25p16@0 {
61 #address-cells = <1>;
62 #size-cells = <1>;
63 compatible = "st,m25p16", "jedec,spi-nor";
64 reg = <0>;
65 spi-max-frequency = <40000000>;
66 mode = <0>;
67
68 partition@0 {
69 reg = <0x0 0xc0000>;
70 label = "u-boot";
71 };
72
73 partition@c0000 {
74 reg = <0xc0000 0x20000>;
75 label = "u-boot env";
76 };
77
78 partition@e0000 {
79 reg = <0xe0000 0x120000>;
80 label = "data";
81 };
82 };
83 };
84
85 i2c@11000 {
86 status = "okay";
87 /*
88 * There is something on the bus at address 0x64.
89 * Not yet identified what it is, maybe the eeprom
90 * for the Atheros WiFi chip?
91 */
92 };
93
94
95 serial@12000 {
96 /* Internal on test pins, 3.3v TTL
97 * UART0_RX = Testpoint 65
98 * UART0_TX = Testpoint 66
99 * See the Excito Wiki for more details.
100 */
101 status = "okay";
102 };
103
104 sata@80000 {
105 /* One internal, the second as eSATA */
106 status = "okay";
107 nr-ports = <2>;
108 };
109 };
110
111 gpio-leds {
112 /*
113 * There is one LED "port" on the front and the colours
114 * mix together giving some interesting combinations.
115 */
116 compatible = "gpio-leds";
117 pinctrl-0 = < &pmx_led_green &pmx_led_red
118 &pmx_led_blue >;
119 pinctrl-names = "default";
120
121 programming_led {
122 label = "bubba3:green:programming";
123 gpios = <&gpio1 6 GPIO_ACTIVE_HIGH>;
124 default-state = "off";
125 };
126
127 error_led {
128 label = "bubba3:red:error";
129 gpios = <&gpio1 9 GPIO_ACTIVE_HIGH>;
130 };
131
132 active_led {
133 label = "bubba3:blue:active";
134 gpios = <&gpio1 10 GPIO_ACTIVE_HIGH>;
135 };
136 };
137
138 gpio-keys {
139 compatible = "gpio-keys";
140 pinctrl-0 = <&pmx_button_power>;
141 pinctrl-names = "default";
142
143 power-button {
144 /* On the back */
145 label = "Power Button";
146 linux,code = <KEY_POWER>;
147 gpios = <&gpio1 7 GPIO_ACTIVE_LOW>;
148 };
149 };
150
151 beeper: beeper {
152 /* 4KHz Piezoelectric buzzer */
153 compatible = "gpio-beeper";
154 pinctrl-0 = <&pmx_beeper>;
155 pinctrl-names = "default";
156 gpios = <&gpio1 8 GPIO_ACTIVE_HIGH>;
157 };
158 };
159
160 &mdio {
161 status = "okay";
162
163 ethphy0: ethernet-phy@8 {
164 device_type = "ethernet-phy";
165 reg = <8>;
166 };
167
168 ethphy1: ethernet-phy@24 {
169 device_type = "ethernet-phy";
170 reg = <24>;
171 };
172 };
173
174 ð0 {
175 status = "okay";
176 ethernet0-port@0 {
177 phy-handle = <ðphy0>;
178 };
179 };
180
181 ð1 {
182 status = "okay";
183 ethernet1-port@0 {
184 phy-handle = <ðphy1>;
185 };
186 };
187
188 /* Wifi model has Atheros chipset on pcie port */
189 &pciec {
190 status = "okay";
191 };
192
193 &pcie0 {
194 status = "okay";
195 };
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